[en] The fluorescence emission and singlet oxygen (1O2) production have been widely investigated over the last decade due to high-value added applications such as organic chemical synthesis1, wastewater treatment2 or photodynamic cancer therapy3.
This work is dedicated to the synthesis and deposition of SiO2 nanoparticles on glass surfaces using Stober’s process and dip coating, respectively.
The adherence was improved through the incorporation of different concentrations of these nanoparticles into a TiO2 matrix. Additionally, the speed of dip coating was used to modify SiO2 thicknesses.
Rose bengal was covalently anchored to SiO2 coatings through (3-aminopropyl)triethoxysilane (APTES) linker. UV, IR, fluorescence, SEM and profilometry were used to characterize the corresponding films and the efficiency for singlet oxygen production was measured by oxidation of the amino acid methionine.
The immobilization of SiO2 nanoparticles photosensitized with rose bengal showed promising results for the production of singlet oxygen.
Disciplines :
Chemical engineering Materials science & engineering Chemistry
Author, co-author :
Mendoza Gallego, Carlos ; Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Lismont, Marjorie ; Université de Liège > Département de physique > Biophotonique
Pàez Martinez, Carlos ; Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Monbaliu, Jean-Christophe ; Université de Liège > Département de chimie (sciences) > Chimie organométallique et catalyse homogène
Dreesen, Laurent ; Université de Liège > Département de physique > Biophotonique
Heinrichs, Benoît ; Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Language :
English
Title :
Characterization of photoactive coatings of SiO2 nanoparticles and Rose Bengal onto glass surfaces
